Hi @robfol! Thanks for the question.
We’re working with a large number of hardware partners, and expect to have our RoonSpeakers streaming protocol implemented in a variety of brands, at a variety of price points, soon. Our current streaming support (Meridian, Airplay) is just the beginning!
That said, for the moment I don’t have any updates to offer on UPNP. Danny went into the reasons in some detail here.